Fix a broken code block display (#9034)

- Description: Fix a broken code block in this page:
https://python.langchain.com/docs/modules/model_io/prompts/prompt_templates/
- Issue: N/A
- Dependencies: None
- Tag maintainer: @baskaryan
- Twitter handle: yaotti

docs/snippets/modules/model_io/prompts/prompt_templates/get_started.mdx

@@ -106,9 +106,11 @@ llm(template.format_messages(text='i dont like eating tasty things.'))
 ```
 
 <CodeOutputBlock lang="python">
+
 ```
 AIMessage(content='I absolutely adore indulging in delicious treats!', additional_kwargs={}, example=False)
 ```
+
 </CodeOutputBlock>
 
 This provides you with a lot of flexibility in how you construct your chat prompts.